My work truck broke down today, so the mechanic came out to fix it. He called me over and asked me to "hold this" a 2-1/2 inch wrench while he proceeded to tightened down a large nut with a 40" pipe wrench. He put all of his weight into it and it started to lift me off the ground. Thats when he slipped off the nut, pivoting my wrench full force into my forehead...I earned 9 stitches and a headache.